Biology 204
Principles of Biology I
Instructions: In your own words define the pairs of terms given below. Write in complete sentences stating the differences and relationships between the two terms and give specific examples where appropriate. A complete answer usually requires four to eight sentences.
Each question is worth four marks for a total of 40 marks.
Instructions: Answer each of the questions given below in your own words. Write in complete sentences where appropriate. A complete answer usually requires one to two sentences per mark so a three-mark question would be answered in three to six sentences. This section is worth a total of 40 marks.
(4 marks) 1. Explain how CDKs regulate cell division.
(4 marks) 2. Explain the role of transposable elements in eukaryotes.
(8 marks) 3. Using the following DNA template strand sequence answer the
questions that follow:
3TGCAGGAAGCTACATTAG5
(5 marks) 4. a. What is an operon?
(5 marks) 5. Explain the possible role of telomerase in cellular aging and in cancer
formation.
(6 marks) 6. a. Draw a diagram to show what could happen during meiosis that
would result in an egg with two X chromosomes.
(6 marks) 7. A female yellow Labrador retriever homozygous for coat colour
(bbee) is mated with a male black lab. They have two chocolate
puppies three black puppies and one yellow puppy. What is the
genotype of the father? Use Punnett squares to show your reasoning.
(2 marks) 8. What is a proteome and why is it studied in addition to (or instead
of) the genome?
Instructions: Select the single best answer to each of the questions given below. Each question is worth one mark for a total of 30 marks.
to place the tRNA bound to the growing polypeptide chain in
the ________ site thereby freeing the ________ site for a new
aminoacyl-tRNA.
no stripes (ss) on its tail?
W: 9%; U and X: 7%; Vand W: 7%; V and X: 5%; and W and X: 2%. What is the sequence of the genes on the chromosome?
End of Assignment 2B